Special Effects, ContinuedRaising,Moving masks creates a layering effect that was popular in the thirties andlowering, orforties. The pigment may be sprayed in the same color or in different colors.moving masks(Continued)Figure 6-30 shows a layering effect created by moving masks repeatedlyaround an illustration.Figure 6-30.Layering masks in an illustration.Continued on next page6-37